DE2425777A1 - VEHICLE WITH ITS OWN DRIVE, IN PARTICULAR FRONT LOADER OR FORKLIFT - Google Patents

Description

Patent Attorneys May 28, 197 ^

Dipf.-fng. A. Grünecker

Dr .-! N? H. Kiiikzidey P 8167

Dr .-! Ng. W. Siookmair - 8 Munich 22. MaximiliansU. 43 2425777

DR. K. SCHUMANN - O! P> ..- iN <3. p. JAKOS

KOEHEBTG COMPANY

780 North Water Street, Milwaukee, Wisconsin 53202, USA

Self-propelled vehicle, especially front loader or forklift

The invention relates to a vehicle with its own drive, such as a front loader or a forklift, with the forward movement and operation of the work equipment from Ilydraulic pumps driven by a Kotor and Hydraulic motors takes place. In particular, the invention relates to such a vehicle that is used for control or adjustment the correct vehicle movement and speed and other vehicle functions equipped with control pedals is.

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Some self-propelled vehicles, such as front loaders or forklifts, are known to move forward and actuation of the implements via motor-driven hydraulic pumps and hydraulic motors. In some vehicles of the aforementioned type, the wheels can by means of Hydraulic motors are driven at different speeds either forwards or backwards. The motors are driven by at least one adjustable hydraulic displacement pump with reversible delivery with · operating fluid fed, the pump having an adjustable movable swash plate for controlling the direction of rotation of the motor and engine speed. In general, one or more servo pumps driven by the vehicle engine are provided, which convey the operating fluid to hydraulic actuating devices, e.g. to pressure center cylinders, which are used to operate other mobile work equipment in the vehicle, e.g. to operate Booms or the like .. In general, all pumps are driven by an internal combustion engine with a throttle device to set the motor speed and thus the pump speed. On some vehicles of the aforementioned type two independently operated control pedals are provided to control the vehicle direction serve and each to set the vehicle speed in the selected direction of travel can be depressed. In addition, a third independently operable pedal is provided, which is only used to set the engine speed and is actuated when the servopumoe is the operating fluid pumps to the actuators for the implements. Usually the third pedal is attached to the left foot of the

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Operated by the driver, while the other two pedals take turns operated by the driver's right foot. With such an arrangement of the pedals it can happen that that the driver is wrong in choosing the correct foot pedal when he drives the vehicle in a certain direction wants to move, and this error can occur especially when the driver is distracted by other tasks becomes or is overtired.

According to the invention, the self-propelled vehicle, in particular the front loader or forklift truck, by means of hydraulic hydraulic motors in forward or reverse direction with different Speeds on drivable wheels. The hydraulic motors are at least one adjustable hydraulic Positive displacement pump with reversible delivery, which with an adjustable swashplate to control the direction of rotation of the motor and the raw motor speed is fed with the operating fluid. According to another advantageous Feature of the invention, the pump is driven by an internal combustion engine with a Throttle device 'is equipped for setting the engine speed and thus the pump speed. One in the driver's cab arranged pendulum pedal is connected to the pump swashplate ■ and - to the engine throttle device The pedal pedal can be pivoted in opposite directions to control the direction of vehicle movement and can be used for adjustment the vehicle speed in the selected direction of travel by a desired amount on the corresponding Side depressed. In a preferred embodiment of the invention, at least one is the internal combustion engine driven additional servo pump provided, which the operating fluid to the hydraulic

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see actuators promotes which are used to operate the other vehicle implements, and an independently operated accelerator pedal is provided, which is used for
Setting the engine speed is used when the hydraulic actuators are in operation. The accelerator pedal and the pendulum pedal can be operated independently of one another, but are connected to the engine throttle device via a common linkage.

More specifically, are the accelerator pedal and the pendulum pedal
pivotably articulated on the floor of the driver's cab so that they can be operated, for example, by the driver's left or right foot. While the accelerator pedal can only be depressed in one direction, the pendulum pedal can be tilted or depressed like a seesaw in two directions by exerting pressure on the opposite ends of the pedal. In the middle of the pendulum pedal, a lever arm is articulated, which extends downwards under the vehicle floor and is attached to one end of a pump control rod which can be moved in the axial direction. The other end of the pump control rod is attached to a link for adjusting the pump flow disks. A movement of the pendulum pedal in one
or another direction causes a corresponding movement of the pump swash plates.

According to a further advantageous feature of the invention, a cylindrical one is below the floor of the driver's cab Rotation axis rotatably mounted, at one end of which an angle lever is rigidly attached, which in turn with a spring-loaded rocker arm is connected. At one

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An axially movable control rod is articulated at one end of the rocker arm. The other end of the control linkage is connected to the throttle linkage of the engine. The accelerator pedal is connected to the angle lever attached to the pivot axis via a rod. The right and left side of the pendulum pedal are linked via rods to a right and left pivot device, which is rotatably mounted on the pivot on opposite sides of a stop on the pivot that protrudes in the radial direction and is firmly connected to the pivot. Each pivoting device has a stop which is engageable with the fixed stop on the axis of rotation into engagement. When the pendulum pedal is depressed in one direction, the corresponding pivoting device rotates on the rotary axis until the stop provided on the rotary device strikes the stop of the rotary axis, and then causes the rotary axis to rotate, whereby the throttle device of the motor is actuated . When the pond pedal is released, a pretensioned spring acting on the axis of rotation via the angle lever is used to turn the angle lever back into its starting position. When the axis of rotation is in its starting position

returns, then lies on the axis of rotation Stop against the corresponding swivel device and turns this and with it the pendulum pedal back to the starting position. Therefore, by rotating the axis of rotation or by actuating the accelerator pedal or the pendulum pedal in one direction or the other a corresponding one Movement of the engine throttle linkage causes.

According to a preferred embodiment of the invention are two adjustable hydraulic displacement pins of the wobble

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disc type provided, with a pump for conveying the Operating fluid to the hydraulic motors for the vehicle rear wheels and the other pump for pumping the operating fluid serves to the hydraulic pumps of the vehicle front wheels. Correspondingly, a pump actuation linkage for the two pumps is used to actuate the swash plate control lever provided on top of each other at the front end of the vehicle engine are arranged. This linkage v / eist a horizontally arranged, rotatably mounted shaft on its Is arranged front in the transverse direction to the engine and at one end of which a first lever arm is attached, which with the pump control linkage is connected, and at the end of the shaft described above, a second lever is attached, which with is connected to the upper control lever for controlling the pump swash plate, and finally a third lever arm is connected to the opposite end of the shaft provided, which is arranged at one end of a spring-loaded in the vertical direction Tie rod is attached, the other end of which is hinged to the control lever of the lower pump swash plate.

The equipped with the pedal control according to the invention The vehicle is easier and safer to operate than comparable vehicles that have individual pedals that can be operated independently to control the direction of vehicle movement and the vehicle speed exhibit. In addition, it enables the pedal control according to the invention that the driver of the vehicle can change vehicle direction and speed without taking his foot off the pendulum pedal must by placing his foot in the center of the V-shaped recess of the pendulum pedal and by a certain amount moved in the desired direction. The pendulum pedal control according to the invention offers an improved device in connection with the connected pump control rods for the simultaneous control of two independent, adjustable displacement punches of the swash plate type.

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Further features, advantages and details of the invention result from the following description of an exemplary embodiment based on the drawing. In this demonstrate:

Figure 1 is a left side perspective view of a self-propelled vehicle such as a forklift or a front loader, which is equipped with an accelerator pedal and a pendulum pedal control is equipped according to the invention;

Fig..2 is a perspective view of part of the Interior of the driver's cab of the vehicle according to Figure 1, the pedal controls according to the invention are shown;

Fig. 3 is an enlarged front view of the pedal controls according to Figure 1;

FIG. 4 is a view similar to FIG. 3, but with the Pendulum pedal is depressed to the right with respect to the vehicle;

Figure 5 is a right side view of the pedal controls according to the line 5-5 of Figure 3;

FIG. 6 is a view similar to FIG. 5, but according to FIG Line 6-6 of Figure 4, showing that the right side of the pendulum pedal is depressed is;

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FIG. 7 is a view of the left side of the controls along the line 7-7 of FIG. 3;

FIG. 8 is a view similar to FIG. 7, but with the accelerator pedal is depressed;

9 shows an enlarged, partially shown in dashed lines Left side view of the engine, pumps, and pump control linkage according to Figure 1;

FIG. 10 is a view along line 10-10 of FIG. 9;

Fig.11 is a schematic block diagram of the hydraulic Control circuit for the hydraulically driven wheels of the vehicle shown in Figure 1 and

Figure 12 is a schematic block diagram of the hydraulic Control circuit for the other hydraulically driven vehicle parts of the illustrated in Fig.1 Vehicle.

In Figure 1, a self-propelled vehicle 10 is for Material handling according to the invention shown, such as a hydraulically powered forklift for heavy loads Loads. The vehicle 10 has a lower unit or chassis 12 on which an upper unit or a Structure 14 is mounted. The structure 14 is opposite to the Chassis 12. can be tilted in opposite directions for leveling within certain limits, so that the vehicle e.g.

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can also be used on uneven terrain

The chassis 12 has a pair of rubber tires Front wheels 16 and a pair of rear wheels 18 fitted with rubber tires, each of which is hydraulically driven and are hydraulically controllable. While an internal combustion engine 20, such as a gasoline or diesel engine at the rear End of the chassis 12 is mounted, the driver's cab 22 is mounted in the area of the front end of the chassis.

The structure 14 has an upwardly reaching frame 24 on which in the rear area 27 one of several sections existing telescopic boom 26 is articulated in such a way that it swivels in the vertical direction can perform. The boom 26 is by means of two large Extendable and retractable hydraulic lifting cylinder 29 pivotable, which is located between the boom and the superstructure 14 are hinged. The boom 26 has a hollow foot portion 26A, a hollow central portion 26B which is telescopically received in the foot portion, and a outer end portion 26C which is telescopically received in the central portion. Sections 26B and 26C are moved telescopically by means of the hydraulic cylinder 28 shown in FIG is. At the end portion C is a downward one Frame 30 rigidly attached. At the point 32 at the free end of the frame 30 is an L-shaped design Fork 31 hinged to Äaufnahtne a load, and the fork is by means of a pair of hydraulic servo cylinders 34 attached between the fork and the frame 30

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are adjustable at an angle relative to the frame 30. The fork 31 is automatically level held when the boom 26 moves in the vertical direction because the servo cylinders 34 of a pair Swing cylinders 35 are actuated, which are articulated between the rear end of the boom 26 and the structure 14 and respond to the boom movement.

In the driver's cab 22 are manually operable control devices provided, namely a steering wheel 37 for the vehicle 10 and various control levers 38 for control the functions of the boom 26. In Figure 2 it can be seen that on the floor 44 of the driver's cab 22 a foot-operated Accelerator pedal 40 and a foot-operated pendulum pedal 42 are arranged. As will be explained in detail below, the accelerator pedal 40 is with the left foot of the Driver operated and used to control the speed of the motor 20, e.g. when the load lifting parts, such as the hydraulic actuatable boom 26 or the hydraulically actuated control can be used. The pendulum pedal 42 is optional with the right foot of the driver moved in opposite directions and is used to control forward movement or the backward movement of the vehicle 10 and the vehicle speed in the respective direction.

In Figures 1, 9, 10, 11 and 12 it can be seen that the Motor 20 is equipped with a throttle device 50, which by means of a gas linkage shown in FIG 51 between an illustrated engine idling position and is pivotable to a rear position. When the vehicle 10 is in use, the engine 20 is continuously in operation and the movement of the throttle linkage 51 from the idle

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position causes an increase in engine speed, while movement back to idle causes engine speed to decrease.

As shown in FIGS. 1, 9 and 10, the engine is 20 is provided on its front face with a pump drive housing 55 on which three hydraulic pumps 56, 57 and 58 are attached. As FIG. 9 shows, the motor 20 has an output shaft 60 with a shaft mounted thereon Drive gear 61 on, which is in permanent Meshing with the gears 62 is located, .which are each mounted on the shafts 63 of the three pumps. The three Pumps are therefore continuously driven by the motor 20 and change their speed in response to changes in the speed of the engine.

The pump 56 is a conventional three stage hydraulic pump and promotes ^ as Fig. 12 shows, liquid of the stage 56A through the control valves 64A, 64B and 64C, whereby the boom lift cylinder 29, the telescopic boom cylinder 28, the swing cylinder 35 and the servo cylinder 34 are operated. Stage 56B conveys liquid through the control valves 65A and 65B, whereby the front and rear control cylinders 66 and 67, respectively, are actuated. Stage 56C conveys liquid through a control valve 70, whereby the leveling cylinder 71 are actuated.

Pumps 57 and 58, best shown in Figures 9 and 10 can be seen are conventional hydraulic positive displacement pumps with reversible conveyance, such as the Sundstrand Model No. 28, which is in the magazine 9630 of the Sundstrand Hydro-Transmission Division of ■ Sundstrand Corporation, Aues, Iowa. The pumps 57 and 58 are

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with swiveling swashplate control rods 57Λ resp. 58Ά equipped. As can be seen from Fig. 11, the Puirroen 57 and 58 are connected and lead the operating fluid to the two front hydraulic motors 72 for the front wheels 16 or to the two rear ones Hydraulic motors 74 for the rear wheels 18. Each motor 72 and 74 can be powered by a variable speed motor such as e.g. from the Sundstrand Model Mo. 28 engine, which is also described in the aforementioned journal is.

Each pump 57 and 58 forms a hydrostatic transmission with the connected motor 72 and 74, which is one unlimited Control of vehicle speed and direction allows. The driver controls the whole thing System via a control lever 57A and 58A and achieves a start, a stop, a forward movement or a reverse movement the wheels driven by the pump. Simultaneous control of the adjustable axial piston displacement pumps 57 and 58 is the solution for the vehicle control of the vehicle 10. The main driving force of the engine 20 is transferred to the pump. When the driver moves the control levers 57A and 58A, the swash plate becomes the corresponding pump swiveled out of the neutral position, If the swash plate, not shown, the adjustable Pump is pivoted, then a positive stroke is exerted on the pump piston, not shown. This will in turn, a certain flow of liquid is generated by the pump at any input speed. This flow of liquid is routed to the engines through high pressure lines. The ratio of the flow volume of the pump

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The speed determines the displacement of the motor the engine output shafts ;. When the joystick moves out of neutral in the opposite direction then the flow of the pump reverses and the motor output shafts rotate in the opposite direction Direction. The speed of the motor output shafts is determined by setting the displacement volume (flow volume) of the transmission set. The performance (working pressure) depends on external factors (slope, ground conditions, etc.> and this also determines the requirements for the system.

As Fig.11 shows, all are for one closed Circuit required valves are provided either in connection with the pump or with the motor assemblies. Complete a reservoir 75, filter 76, control valves 77 and 78, and fluid connection lines the circuit.

The Fig.2 shows that the accelerator pedal 40 and the V-shaped or butterfly-like pendulum pedals 42 are pivotably articulated on the floor 44 of the driver's cab 22, so that the driver can reach them with his left or right foot, for example. As can be seen in FIGS. 3 to 7 let, the pedals 40 and 42 are pivotable to transverse to Pedal extending bolts 39 and 41 are hinged, which are mounted in brackets 43 and 45 welded to the floor 44 are. While the accelerator pedal 44 only turns in one direction his. Bolt 39 can be pushed downwards the pendulum pedal 42 in a kind of rocking motion in two opposite directions Directions about the bolt 41 are pushed down or pivoted, either in-dom on the

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right end 42A or the opposite left end 42B a pressure is exerted. The pendulum pedal 42 has a central hub 91 to which a lever arm 90 is rigidly attached extending downwardly from the hub through a hole 95 provided in the bottom 44. Of the Lever arm 90 is attached to one end of a pump control rod 9 3 extending in the axial direction. The other The end of the linkage 93 is on a handlebar 100 for actuating the control levers 57Λ and 58A for setting the pump flow disks articulated .. The rod 93 is movably mounted in a sleeve-like rod guide 9 4, the respective ends 96 and 97 of which are attached to stationary supports of the vehicle 10. A movement of the Pendulum pedal 42 in one direction or the other causes a corresponding movement of the pump flow disks for simultaneous actuation of pumps 57 and 58, as has already been stated.

A cylindrical pivot axis 102 is under the floor 44 rotatably mounted in two spaced-apart bearing bushes 104, which in turn are supported by two carriers 106 are worn. A crank or plate 103 is rigidly attached to one end of the axle 102. Between one a bearing bracket attached to the underside of the pedal 40 and the plate 108, a rod 116 is pivotally attached. A movement of the accelerator pedal 40 causes a rotary movement of the plate 108 and the clutch 1O2. The plate 1O8 is over a rod 112 at one end of a "otorkur.be Is chwince 110 hinged. The rocker arm 110 is pivotable mounted on an axle 114 which is supported on a stationary part of the vehicle 10. Between the other

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End of the rocker arm 110 and a holder 120, the is rigidly attached to a stationary part of the vehicle 10, a tension spring 122 is clamped. the Tension spring 122 holds the crank! Swing arm 110, the plate 108, the axis of rotation 102 and the accelerator pedal 40 in their normal rest position, from which the accelerator pedal 40 is down can be pressed. The rocker arm 110 is connected to the throttle linkage by means of an axially movable control linkage 124 51 of the motor 20 connected. Therefore, by depressing the accelerator pedal 40, the accelerator linkage 51 becomes actuated and causes an increase in the engine speed. Conversely, a pressure relief of the accelerator pedal 40 causes that the spring 122 moves the gas linkage 51 into the Lcerlaufstellung and returns the accelerator pedal parts to the above-described rest position.

The right and left sides of the pendulum pedal 42 are by means of rigid rods 130 and 131 to a right and a left pivot device 133 or 134 is articulated. the Pivoting devices 133 and 134 have cylindrical hollow bodies 135 and 136, respectively, on opposite sides a stop 138 provided on the axis of rotation 102 are rotatably mounted on the axis of rotation 102. The attack 138 consists of a cylindrical hollow body 140, which is rotationally fixed on the axis of rotation 102 by means of a pin 142 is held. The hollow body 140 is equipped with a stop or a plate 144, which is attached to one side of the axle 102 extends outward. The stop 144 engages with stops 146 and 147, which are provided on the cylindrical hollow bodies 135 and 136 *, the hollow bodies 135 and 135 also have lever arms 150 and 151 projecting outwards

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which the lower ends of the rods 130 and 131 are pivotable are hinged. The upper ends of rods 130 and 131 are pivotally attached to bearing supports 154 and 155, which are arranged on the underside of the pedal ends 42A and 42B of the pendulum pedal 42.

When one or the other side of the pendulum pedal 42 is pressed down, the one connected to it rotates Swivel device · on the axis of rotation 1Q2, until the arranged stop 146 or 147 abuts against the stop 144, whereupon the axis of rotation 102 and the crank 108 rotated and operate the throttle linkage of the engine, so that the engine speed increases. It should be noted that depressing either the pedal end 42A or the pedal end 42B of the pendulum pedal 42 rotates the Rotation axis 102 causes in the same direction. When the downward pressure is applied to either end of the Pendulum pedal 42 stops, then the spring 122 ensures that the axis of rotation 102 is in its normal or rest position is moved back. While this is happening, the stop 144 acts either on the stop 146 or 147, the has been adjusted beforehand, and ensures that the cylindrical hollow body 135 or 136 is rotated into its normal position whereby the pendulum pedal 42 returns to its central or normal position. When the axis of rotation 102 is rotated by the pendulum pedal 42, then the accelerator pedal 40 performs a corresponding movement, although it does not was kicked off immediately by the driver's foot.

It appears that one was caused by either the accelerator pedal 40 or the pendulum pedal 42

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Rotation causes a corresponding movement of the engine throttle linkage 51, thereby changing the engine speed and a corresponding change in the speed of the pump shafts the pumps driven by the engine can be achieved. An increase in engine speed is desirable when any of the three motor driven pumps operating fluid to promote to their respective hydraulic motors or control parts. This is necessary to get a to achieve greater pump output.

In the motor described for example, two adjustable displacement pumps 57 and 58 are provided, one pump each serving to convey the liquid to the motors for the rear wheels and the other pump to convey the liquid to the motors for the front wheels. As FIG. 9 shows, the two pumps are arranged the other way round, so that the control levers 57A and 58A must be connected by means of a suitable link so that the control levers 57Λ and 58A can move at the same time. As the 9 and 10 show, the handle bar 100 has a horizontally arranged, rotatable shaft 160 that is supported in a bearing bushing 161, which is in turn supported by bearing supports 162 and 163, the bearing supports on a stationary part of the vehicle 10 are attached, such as on the gearbox housing. It should be noted that the linkage 93 of the pendulum pedal 42 is articulated on a lever arm .164 which is rigidly connected to the shaft 160. Another lever arm 165, which is also rigidly connected to the shaft 160, is articulated to the control lever 57A of the Puinoe 57 by means of a rod 167. A lever arm 169 is rigidly connected to the opposite end of the shaft 160 and by means of an elongated rod 170 extending downward

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hinged to an angle lever 172 which is connected to the control lever 58A of the pump 58 via a rod 173. The rod 170 is provided with a stop 175 which is received between a pair of preloaded springs 176 and 177 . The springs 176 and 177 are clamped between the shanks of an O-shaped carrier 180 which is rigidly fastened to a carrier plate 182 on the motor 20 by means of screws 181. When the shaft 16O is rotated via the linkage 93 in response to the movement of the pendulum pedal 42, the axial movement of the linkage 93 is transmitted via the lever 100, so that a simultaneous movement of the pump control levers 57A and 58A takes place. When the pendulum pedal 42 returns to its neutral position, the springs 176 and 177 acting on the rod cause both pump control levers 57A and 58A to return to their neutral positions so that the pumps 57 and 58 do not generate any fluid flow on their pressure side.

There is an electrical switch on a bearing support 2O1 2OO attached, which is actuated by a switching element 2O3 arranged on the pendulum pedal 42. The switch should prevent the engine 20 of the vehicle 10 from starting when the pendulum pedal 42 is not in its neutral position is located.

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Claims (1)

P 8167 Patent references Self-propelled vehicle, especially front loader or forklift truck for heavy loads, characterized in that the vehicle (10) has wheels (16, 18), and a hydraulic motor (72, 74) to drive at least one wheel that a first hydraulic pump device (57, 58) is provided for conveying aer operating fluid to the engine, towie an operating device (20) for driving the first hydraulic pump, that for controlling the first hydraulic pump device, a control device with a first movable control part (57A, 58A) for setting the direction of rotation and the speed of the engine and the wheels of the vehicle is provided that the control device for the speed setting has a "wide control part (51), which is movable to set the speed of the drive device and the first hydraulic pump device, that a pendulum pedal (42) is provided, which to a first axis (41) for controlling the direction of rotation and the speed of rotation of the Engine and the wheels is pivotable in opposite seals and which has two parts (42A, 42B) which are arranged on opposite sides of the axle that for controlling the hydraulic 409881/034? pump, a lever arm (90) is provided which is attached to the pendulum pedal and can be moved with it, that a device for connecting the lever arm for pump control with the first control part of the pump control device is provided, which actuates the control part as a function of the movement of the pendulum pedal, that transversely to the first axis (41) an axis of rotation (102) is arranged, on which one with the axis of rotation rotatable crank (108) is attached that means (112, 110, 124) for connecting the crank with the second control part of the speed control device is provided that on the axis of rotation with respect to the circumference of the axis of rotation protruding stop (144) is provided that a pair is independent mutually movable bearing bushes (135, 136) on opposite one another Sides of the stop is rotatably mounted on the axis of rotation, each bearing bush a lever arm (150, 151) and one with the stop (144) has an engageable stop (146, 147), and that a device (130, 131) is provided which the lever arm (150, 151) of each bearing bush connects to one of the two parts of the pendulum pedal- Vehicle according to claim 1, characterized in that on the vehicle (10) at least a working device (26) is provided for performing a work cycle, as well as a hydraulic actuating device (29) to drive the implement, that a second from the drive device (20) driven hydraulic pump (56) is provided, which conveys the liquid to the actuating device, that one of the pendulum pedal (42) can be operated independently accelerator pedal (40) for setting the speed of the 409881/0347 Drive device (20) and the first (57, 58) and second hydraulic pumps (56), and a device (116) are provided for connecting the accelerator pedal to the crank (108). 3. Vehicle according to claim 1 or 2, characterized g e k e η η ζ ei c h η e t that the accelerator pedal (40) a second axis (39) is pivotably mounted, which is arranged transversely to the first axis (41) and that the first axis runs parallel to the longitudinal axis of the vehicle. 4. Vehicle according to one of claims 1 to 3, characterized in that the vehicle has two front wheels (16) and two rear wheels (18), that the first hydraulic pump device comprises a pair of first hydraulic pumps (57, 58), and that the control device for the first hydraulic pump device has a linkage, which for a simultaneous actuation of the first two Hydraulic pumps linked to the pendulum pedal (42) as a function of the actuation of the pendulum pedal is. 409-881 / 0347 ΐΐίΐ f. Blank page